Reciprocating type corrosion fretting wear testing machine

Abstract

The invention discloses a reciprocating type corrosion fretting wear testing machine, which comprises a bottom plate, a salt spray chamber, a vertical loading device and a lateral movement device, wherein the lower end of the salt spray chamber is provided with an opening; a bottom plate is in fixed sealing connection to the lower end of the salt spray chamber; the middle of the bottom plate is fixedly connected with a supporting block; the supporting block is provided with a horizontal linear guide rail which is connected with a lateral movement device and a lower fixture; the lower end of the vertical loading device is provided with a pressure sensor and an upper fixture which just faces the lower fixture in sequence; the vertical loading device movably penetrates the top of the salt spray chamber in a sealing way; the lateral movement device movably penetrates through the side wall of the salt spray chamber in a sealing way; the rear side of the salt spray chamber is provided with asalt spray occurrence hole for connecting a salt spray device; and the bottom plate is fixedly connected to the base. By use of the machine, an independent fretting wear test and a corrosion frettingwear test under a salt spray state can be realized, the machine has the characteristics of being convenient in operation, high in fretting accuracy and stable in loading, can display wear coefficients in real time and can favorably reflect practical working condition tangential fretting wear.

Description

technical field [0001] The invention relates to a reciprocating corrosion fretting wear testing machine, which belongs to the technical field of friction and wearing testing machines. Background technique [0002] Fretting wear refers to the frictional movement that occurs between contact surfaces with extremely small displacement amplitudes. Generally, the displacement amplitude is in the range of microns, and it is caused by fatigue loads, mechanical vibrations, electromagnetic vibrations, or thermal cycles under approximately static working conditions. Friction is fretting friction. Its movement is concealed, but its harm is obvious. Fretting will cause damage to the contact surface of the material, generate cracks, and even lead to the failure of the entire system. Studies by relevant research institutions have shown that about 30%-50% of the world's energy is consumed in various forms every year on friction, resulting in huge economic losses, and about 80% of mechanical...

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However, its low precision, complex technology, easy oil leakage in the hydraulic system, and la...

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